To arrive an Individual or Event Booking, from the Retail Point of Sale Screen:

Select Bookings.

Locate the booking you wish to arrive and open the booking.

If you wish to arrive specific individuals from the booking, in the 'Ar' column next to their names, select Y next to those you want to arrive and N next to those you do not wish to arrive.

In the toolbar at the top of the screen you will see an option F9 Arrive.  When you select this option the charge associated with the booking will be entered into the Point of Sale Screen.

If there are any other items to be purchased, these can be added to the bill.

You can then settle the bill in the usual manner by selecting the payment button on the screen or by selecting the applicable payment method on the keyboard.